CCAT2 and colorectal carcinoma: ROC analysis also revealed that serum CCAT2 discriminated CRC from healthy controls with AUC = 0.73, 95% CI = 0.685–0.818, P = 0.0001, with sensitivity = 82.5%, specificity = 66.66%, PPV = 75.57%, and NPV = 75.29% at a cutoff >1.5 fold.